package com.heima.app.gateway.filter;

import com.heima.app.gateway.AppGatewayApplication;
import com.heima.app.gateway.config.AppJwtUtil;
import io.jsonwebtoken.Claims;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
@Slf4j
@Component
public class AthorizeFilter implements Ordered , GlobalFilter {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        //获取reuqest和response
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();
        //判断是否为登录请求
        if (request.getURI().getPath().contains("/login"))
        {
            log.info("登录请求直接放行=======>");
         return    chain.filter(exchange);
        }
        String token = request.getHeaders().getFirst("token");
        if (StringUtils.isBlank(token))
        {
            log.info("token为空,返回401=======>");
            response.setStatusCode(HttpStatus.UNAUTHORIZED);
            return response.setComplete();
        }
        try {
            Claims claims = AppJwtUtil.getClaimsBody(token);
            int i = AppJwtUtil.verifyToken(claims);
            if (i==1||i==2)
            {
                response.setStatusCode(HttpStatus.UNAUTHORIZED);
                return response.setComplete();
            }
        } catch (Exception e) {
            log.info("来异常了======>");
            e.printStackTrace();
            response.setStatusCode(HttpStatus.UNAUTHORIZED);
            return response.setComplete();
        }
        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return -1;
    }
}
